Links

Here we have collected links to fundamentals that our users haved asked about. Such topics may be two-line elements, calibration lookup tables for MODIS, near-real time data, and many more. We keep in mind that the geometry and collocation of A-Train measurements will be one of the major issues for users.

For links to home sites of A-Train missions and instrument teams, please visit our Missions page.

NASA Facts about A-Train An early NASA summary tour over rationale, participating satellites and instruments, and the scope of science issues covered.

A comprehensive archive of current and historical TLE. For historical, users will need to establish an account. Registered users can set automated download using Space Track TLE retriever.

Constellation Coordination SystemYou have to register to use these resources. This site allows you to view the status of the participating missions and to review the scheduled activities of each mission. You can also make use of the site's powerful mission analysis tool.

MODIS/Aqua Orbital Tracks This site from the University of Wisconsin will give you Aqua tracks broken into 5-min ranges corresponding to MODIS granules. Very helpful to get a feel of MODIS coverage on a given day, at a given time and location.

MODIS/Aqua Subsets over AERONET Stations This site from MODAPS will give you MODIS Aqua Data Subsets over 176 AERONET Stations on the Earth. This data has to be obtained from MODAPS via their Data Access Link. The data product prefix is of the form: MYDARNSS.xxx. (xxx refers to the AERONET site number).

MODIS Rapid Response System The MODIS Rapid Response System was developed to provide daily satellite images of the Earth's landmasses in near real time. True-color, photo-like imagery and false-color imagery are available within a few hours of being collected.

MODIS Ocean Biology Processing offers access to near-real time, "quicklook", L1 and ocean L2 granules. Use with care - these are not intended to have accurate calibration. Scroll to the bottom of that page to find links to MODIS LUT. The original source, though, for LUT is MCST.